as a 3 seater from the 1981 general election until its abolition at the 1992 general election to be replaced by the 4-seat Longford–Roscommon constituency. It comprised the administrative county of Roscommon; and, in the administrative county of Galway, the district electoral divisions of: Ballinastack, Ballymoe, Ballynakill, Boyounagh, Creggs, Island, Kilcroan, Templetogher, Toberroe, in the former Rural District of Glennamaddy.[2]

Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns. For details of the order in which seats were won at each election, see the detailed results of that election.

Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns. For details of the order in which seats were won at each election, see the detailed results of that election.